fix(ff-a): remove test regions from SP manifests

The device test regions were used in early prototyping but no longer
necessary now. The first cactus instance covers the device region
mapping feature. This change also eliminates warning logs from the TF-A
CI about non-existent SMMU id:

WARNING: SMMUv3: Unexpected smmu-id:1 specified in manifest

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: Idb081c50d76f555360d25a219ac7a5a74c834b87
3 files changed